shen
Senior Member
Siberia had vast amounts of coal, oil, gas, aluminum, iron, magnese, copper, nickel, chromium, lumber, potential for hydro-electric power. Siberia may not have rubber, but it is the full house as far as mineral resources for wareffort goes, much more so than even the european controlled east indies.
Even when Japan eventually find herself at war with the US, she would have been much stronger than she was, because not only did she have the full resources of Siberia, those can all be conveyed to centers of Japanese industry in Manchuria and Japan proper along interior lines of communication, immune to interdiction by the US navy.
During WWII, it is easy to overestimate how much resources from the east Indies actually helped Japan. These resources can only reach Japan along numerous highly exposed exterior lines of sea lane communication. The US ran a very effective submarine interdiction campaign against these sea lanes, much more effective than Germany's Uboat campaign against Britain. By 1943 successful shippments were already scarce and Japanese merchant fleet was decimated and continuing to suffer losses far above replacement rate. Some estimate suggests US interdiction campaign cut Japanese war production by 2/3.
Even the disposition of Japanese navy was dictated by the fact that Japanese fleet can not be fuelled if it stationed itself in Japan proper, and must operate as much as possible out of Singapore so crude oil from Dutch East Indies can be sent directly to Japanese warships instead of being sunk on tankers while on the way to be refined in Japan and distributed to the fleet.
I don't doubt Siberia has vast resource potential. The problem is what critical resources were technical feasible for Japan to exploit back in late 1930's. Coal, and most other resources, they already had aplenty in Manchuria and other parts of conquered China.
According to this, Japanese annual oil consumption peaked in 1943 at 44million barrels.
1940, the entire Siberian oil production was 1.4% of total Soviet oil production. If you look for the Siberian oil production regions on a map, it seems obvious the vast majority of even that 1.4% can't transported back to Japan. The only accessible Siberian oil field seems to be Ohka located Sakhalin Island, with an annual production of 470,000 tonnes (1/3 of which was already going to the Japanese). The available Siberian oil production doesn't seem to come nearly to fulfill Japanese consumption.